(3JGQjN GdYQGb aj GdYgO GdYKeGfj(B:s (3OQGSI aj GMhGdg GdSjGSjI(B/s - (3Ydj,Ydj TGcQs ((3GdehUd(B:s (3ecJHI (B30 (3JehR,s, 1985)
Keywords: (3GdYQGb(B-(3JGQjNs -- (3GdYUQ GdYKeGfjs